cylinder-head-bolt-sleeves-770-288-770

f ‘( SERVIINCFEO RMATION Techn. Customer Service Motorcycles R50/5,R60/5,R75/5 Group: Engine Mlinchen, July 1970 VKT-20 Fm/Wi/St No. 7/70 (288) en, ( \ Re: Through-bolt sleeves pressed into cylinder bead Dear Sirs, In order .to avoid oil leakages between cylinder head and through;…bol t sleeves in case of unfavorable machining tolerances, new through-bolt sleeves with. seal rings (0-ring) and spacers are now used on model R 50/5 commencing with frame No. 2 900 602 ” R 60/5 ” ” ” II 2 930 965 U R 75/5 U II II II 2 970 980 The new parts fit the three models and have the following ordering numbers: Through-bolt sleeve 11 12 1 254 839 0-ring 11 12 1 255 167 Spacer 11 12 1 254 840. The upper guide of the new through-bolt sleeve is by approx, 1.8 mm shorter than the previous version. Thus results, with built-in through-bolt sleeve an annular.section for the lodgement of the 0-ring. When tightening the cylinder head, the 0-ring is pressed, through a spacer, against the through-bolt sleeve and its lodging bore in the cylinder head. This assures an efficient sealing between cylinder b.ead and througb.-bol t sleeve, see sketch II, In case of complaint, the new through-bolt sleeve may be installed also subsequently, To do this, remove cylinder head and tap an M 12 thread iBto the pressgd-in sleeve. Heat cylinder bead up to 180 – 200 C (356 – 392 F) . . I. Kenntnls genommen – Pris connalssance – Noted – Tornado nota – Preso conoscenza Ablage • Archives • Fil, • Archlvo Betriebsleitung Direction ~’~~~~,:_~en! lwenmott Atelier Workshop Tnll.~, IKD•Annohme ,IGew~hr1.-Soehb. ,E-Teildlenst Reception clien_1eIe lnspecteur garonlio Service plllces detachees Cust. reception warranty inspector Spare ports service Q,,r,,nrlnn rliArltP.lo lnsoector oorantla Servicio de recambios Betriebs!eitung Direction Management Direcc16n WerkSlOI\ Atelier Workshop T:,ller – 2 – No. 7/70 (288) en. Screw M 12 bolt (1) into pressed-in sleeve (2), tap tbe pressed-in sleeve witb appropriate drift (3) (10 mm¢, approx. 160 mm long) out of cylinder bead, see sketch I. Tap new tbrougb-bolt sleeve (4) into still warm cylinder head. Slide-on 0-ring (5) and spacer (6), see sketch II. It proved convenient to renew the four through-bolt sleeves per cylinder head, in case of a repair. Labor required for repair of one cylinder bead = 4 tbrougb-bol t sleeves ‘-….,1 37 FR, to repair both cylinder beads = 8 tbrougb-bol t sleeves 60 FR. Enclosure sheet with sketch I+II Yours v~ry truly, BAYERISCHEN 0T0RENW ERXE Aktiengesellschaft ppa. i. V. Delleske 11 I .U&tU/. Bennewitz ( l__/